Rear sight.



w:. L. MARBLE..

REAR SIGHT. APPLICATION FILED JULY 1, 1909. RENEWED JUNE 24, 1910.

L T E E H A 8 T E E H 8 2 THE NORRIS PETERS ca, wasnmcnm, n. c.

firattsma 'W. L. MARBLE.

REAR SIGHT.

APPLICATION FILED JULY 1, 1909. RENEWED JUNE 24, 1910.

Patented Jan. 17, 1911.

2 SHEETS-SHEET 2.

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U 1 CULQHIQWI WEBSTER L. MARBLE, OF GLADSTONE, MICHIGAN.

REAR SIGHT.

Patented Jan. 17, 1911.

Serial No. 568,715.

982,151. Specification of Letters Patent.

Application filed July 1, 1909, Serial No. 505,455. Renewed June 24, 1910.

to occupy a position along or above a diam- To all whom it may concern:

Be it known that I, IVnnsrER L. IVIARBLE, eter of the pintle, so that the action of the a citizen of the United States, residing at spring is to return the standard to its up- Gladstone, in the county of Delta and State right position even if it is folded down flat 60 5 of Michigan have invented new and useful upon the base plate; the reason being that Improvements in Rear Sights, of which the the point at which the spring bears against following is a specification. the knuckle in either of these positions is at This invention relates to sights for fireone side of the center of the pintle, so that arms, and its object is to improve what are the spring always can effect a turning mo- 65 10 known as flexible vertically-adjustable rear ment with respect to said pintle, and inassights. much as the bearing point is always between To this end the invention consists in cer the center of the pintle and the target of the tain features of construction and arrangesight, the result is to lift said target to its ment whereby the spring oint is made more operative position. 70

simple and at the same time stronger, and If it is desired to lock the standard in also in a simple mode of changing the size either of its folded down positions, as indiof the peep hole in the target of the sight, cated in dot-ted lines in Fig. 1, a small bolt all as hereinafter set forth and particularly 11 in the knuckle can be dropped into a pointed out in the claims. socket 12 in one side or the other of the ear 75 In the accompanying drawings, Figure 1 2. The bolt has a head by means of which is a side elevation of the sight. Fig. 2 is a it can be lifted out of said socket when the sectional side view. Fig. 3 is a cross section standard is to be released. In the standard on the line 33, Fig. 2. Fig. 4 is a rear 4 is supported the shank 13 of the peep sight. view of the target and its shank. Fig. 5 is For convenience of manufacture, the target 30 a front elevation of the same. Fig. 6 is a 14 is made separate from its shank. On the vertical section thereof. Fig. 7 is a top plan front of the target is a boss 15 having a wide view, and, Fig. 8 is an exploded perspective upright groove with undercut walls. The view. shank has a head 16 provided with dovetail The base plate 1 has two ears 2 between flanges 17 to fit said groove and thereby se- 85 which is received the knuckle 3 of the standcure the target to said shank. In order to ard 4. A pivot or pintle 5 passes translock the target from coming off, it carries versely through the ears and knuckle, havpreferably a spring latch 18 which takes ing at one end a head 6 and at the other end under the lower edge of the head 16 when screw threads to receive the retaining nut 7. the target has been slid down into place. 90

A dowel pin 8 on the head enters one of two To release the target, the spring can be or more sockets 9 in the ear to prevent the pressed back to the position shown in dotted pintle from turning, and to enable it to be lines in Fig. 7 out of line with the head 16. angularly adjusted. The standard is in- The target has the usual peep hole 19, but tended to stand vertical when the gun is in order to vary the effective opening of 95 held in a horizontal firing position, and this said hole, I provide the head with two or brings it at an oblique angle to the base more slides containing holes of different plate. In order to permit the base plate sizes and adapted to be brought in line with to be secured to stocks having different the peep hole 19 when desired. These slides slopes, and yet have the standard vertical, 20 are preferably arranged to move verthe pintle is made angularly adjustable by tically, being superposed one behind the causing the dowel pin to enter the proper other, in an upright slot in the head 16. socket in the ear. Each slide has flanges 21 fitting the flattened The knuckle is slotted or bifurcated to resides of the head, and said flanges are prefceive the free end of a strong U-shaped leaf e'rably roughened to give a finger hold.

spring 10, similar to the sear spring of a A screw stud 22 is fixed in the upper part gun lock. The lower member of said spring of the head above said slides, crossing the is seated in a longitudinal groove in the slot, and having a nut 28 by means of which base plate, while its upper free member eX- the two portions of the head on either side 1 tends through the knuckle and bears upof the slot can be pinched together, thereby wardly against the same. The pintle is clamping the slides and locking them in flattened or cut away to permit the spring place, wherever they may be in said slot.

In each slide is an aperture 24, one being smaller than the other, and both being smaller than the peep hole 19. The head 16 has a hole 25 in line with the peep hole 19, so that by moving one or the other of the slides down until its aperture comes in line with said peep hole, the effective size of said hole will be lessened. \Vhen the slides are both in their upper positions, the view through the hole 19 is unobstructed. The shank has the usual toothed wings 26 for enabling it to be vertically adjusted in the standard of the sight, by means of the rotatable screw sleeve 27.

Having thus described my invention, what I claim is:

1. A rear sight having a base plate, a standard having a bifurcated knuckle, a pintle cut away to its center, and a leaf spring passing through said knuckle and bearing against the same on each side of said pintle.

2. A rear sight, having a peep hole, and a plurality of superposed slides having perforations of different sizes adapted to be brought in line with said hole to vary its effective size.

3. A rear sight having a shank provided with a slot, and a plurality of superposed slides having perforations of different sizes and movable in said slot.

4. A rear sight having a shank provided with an upright slot, and superposed slides having perforations of difierent sizes and movable up and down in said slot.

5. A rear sight having a shank provided with an upright slot, superposed perforated slides independently movable up and down in said slot, and means for clamping said slides.

6. A rear sight having a head provided with an upright slot, a target sight secured to said head and having a peep hole, and

perforated slides movable in said slot into and out of line with said peep hole, said slides having roughened flanges.

7. A rear sight having a shank provided with a dovetail head, and a target peep sight provided with a boss having an under cut groove to engage with said head.

8. A rear sight having a shank provided with a head, a target peep sight having a groove to engage with said head, and a spring latch for securing said target to said head.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

VEBSTER L. MARBLE.

Witnesses:

CLAUDE E. HAWKINS, IRA BENDER. 

